我想将我的笔记本电脑（Arch Linux）连接到 arduino。我通过 bluez 连接它并在 arduino 端使用 hc-05。
问题是，bluez 与 Android 手机连接正常，Android 手机也与 hc-05 连接正常，但当尝试将 bluez 连接到 hc-05 时，它从未连接。
配对成功，但无法连接。今天早上早些时候，我尝试配对，但没有配对，但当我尝试连接时，它已连接！重启后情况相反，它配对但从未连接
错误是
[bluetooth]# connect 98:D3:31:90:24:76
Attempting to connect to 98:D3:31:90:24:76
[CHG] Device 98:D3:31:90:24:76 Connected: yes
[CHG] Device 98:D3:31:90:24:76 ServicesResolved: yes
Failed to connect: org.bluez.Error.NotAvailable
[CHG] Device 98:D3:31:90:24:76 ServicesResolved: no
[CHG] Device 98:D3:31:90:24:76 Connected: no
[bluetooth]#
dmesg 将是 -
dmesg | grep luetooth
[ 8.424435] Bluetooth: Core ver 2.22
[ 8.424453] Bluetooth: HCI device and connection manager initialized
[ 8.424459] Bluetooth: HCI socket layer initialized
[ 8.424461] Bluetooth: L2CAP socket layer initialized
[ 8.424467] Bluetooth: SCO socket layer initialized
[ 8.588905] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[ 8.588907] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
[ 8.752742] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[ 8.765889] Bluetooth: hci0: rom_version status=0 version=1
[ 8.765911] Bluetooth: cfg_sz 44, total size 22540
[ 11.659685] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 11.659687] Bluetooth: BNEP filters: protocol multicast
[ 11.659692] Bluetooth: BNEP socket layer initialized
[ 1150.278244] Bluetooth: RFCOMM TTY layer initialized
[ 1150.278253] Bluetooth: RFCOMM socket layer initialized
[ 1150.278275] Bluetooth: RFCOMM ver 1.11
[ 2967.008290] Bluetooth: hci0 urb ffff88013e088600 failed to resubmit (2)
[ 3644.900996] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=0e2f lmp_ver=06 lmp_subver=9f73
[ 3644.900998] Bluetooth: rtl: assuming no firmware upload needed.
[ 5274.608968] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[ 5274.608970] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
[ 5274.609003] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[ 5274.609950] Bluetooth: hci0: rom_version status=0 version=1
[ 5274.609964] Bluetooth: cfg_sz 44, total size 22540
[root@Turing ~]# dmesg | grep luetooth
[ 8.424435] Bluetooth: Core ver 2.22
[ 8.424453] Bluetooth: HCI device and connection manager initialized
[ 8.424459] Bluetooth: HCI socket layer initialized
[ 8.424461] Bluetooth: L2CAP socket layer initialized
[ 8.424467] Bluetooth: SCO socket layer initialized
[ 8.588905] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[ 8.588907] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
[ 8.752742] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[ 8.765889] Bluetooth: hci0: rom_version status=0 version=1
[ 8.765911] Bluetooth: cfg_sz 44, total size 22540
[ 11.659685] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 11.659687] Bluetooth: BNEP filters: protocol multicast
[ 11.659692] Bluetooth: BNEP socket layer initialized
[ 1150.278244] Bluetooth: RFCOMM TTY layer initialized
[ 1150.278253] Bluetooth: RFCOMM socket layer initialized
[ 1150.278275] Bluetooth: RFCOMM ver 1.11
[ 2967.008290] Bluetooth: hci0 urb ffff88013e088600 failed to resubmit (2)
[ 3644.900996] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=0e2f lmp_ver=06 lmp_subver=9f73
[ 3644.900998] Bluetooth: rtl: assuming no firmware upload needed.
[ 5274.608968] Bluetooth: hci0: rtl: examining hci_ver=06 hci_rev=000b lmp_ver=06 lmp_subver=8723
[ 5274.608970] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_config.bin
[ 5274.609003] Bluetooth: hci0: rtl: loading rtl_bt/rtl8723b_fw.bin
[ 5274.609950] Bluetooth: hci0: rom_version status=0 version=1
[ 5274.609964] Bluetooth: cfg_sz 44, total size 22540